Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Leibnizstr. 19, 24118 Kiel, Germany.
Phys Chem Chem Phys. 2010 May 7;12(17):4481-7. doi: 10.1039/b922882a. Epub 2010 Mar 15.
Detailed scanning tunneling microscopy studies of the attachment of freestanding molecular functions to Au(111) surfaces via self-assembly of functional molecules based on triazatriangulenium platforms are presented. As shown for molecules with side chains of different length and phenyl, azobenzyl, or azobenzyl derivatives with different terminal groups (iodo, cyano, or dimethyl) as functional units, this approach allows the preparation of very stable, hexagonally ordered adlayers. The intermolecular spacings in these adlayers are independent of the attached functions with the latter being orientated perpendicular to the Au surface. Due to their open structure, adlayers of platforms with attached functional groups exhibit a tendency towards bilayer formation, which can be suppressed by derivatization with appropriate terminal groups.
呈现了通过基于三嗪并三嗪翁平台的官能团分子的自组装，将独立的分子官能团附着到 Au(111)表面的详细扫描隧道显微镜研究。对于具有不同侧链和苯基、偶氮苯或偶氮苯衍生物作为官能团的不同末端基团（碘、氰基或二甲基）的分子，这种方法允许制备非常稳定的、六边形有序的吸附层。这些吸附层中的分子间间距与附着的官能团无关，后者垂直于 Au 表面取向。由于其开放结构，带有附着官能团的平台吸附层倾向于形成双层，通过用适当的末端基团进行衍生化可以抑制这种倾向。
